[SANS ISC] Simple Powershell Ransomware Creating a 7Z Archive of your Files

I published the following diary on isc.sans.edu: “Simple Powershell Ransomware Creating a 7Z Archive of your Files“: If some ransomware families are based on PE files with complex features, it’s easy to write quick-and-dirty ransomware in other languages like Powershell. I found this sample while hunting. I’m pretty confident that this

[SANS ISC] Powershell Dropping a REvil Ransomware

I published the following diary on isc.sans.edu: “Powershell Dropping a REvil Ransomware“: I spotted a piece of Powershell code that deserved some investigations because it makes use of RunSpaces. The file (SHA256:e1e19d637e6744fedb76a9008952e01ee6dabaecbc6ad2701dfac6aab149cecf) has a very low VT score: only 1/59!. The technique behind RunSpaces is helpful to create new threads on the existing Powershell

SANS ISC

[SANS ISC] “Lost_Files” Ransomware

I published the following diary on isc.sans.edu: ““Lost_Files” Ransomware“: Are good old malware still used by attackers today? Probably not running the original code but malware developers are… developers! They don’t reinvent the wheel and re-use code published here and there. I spotted a ransomware which looked like an old one… [Read